According to responses from Mark Rosewater on his Blogatog Tumblr, he and the design team feel that you cant go half in, which to me, sounds like they believe you have to label everything
Plus, Goblins famously tend to be fodder
The same 20-year nostalgia cycle driving EX-era collectors back into the hobby is already well underway for Base Set, and Shadowless cards are sitting directly in the path of that demand wave
Sisters of Stone DeathSisters of Stone Death and Vraska, the SilencerVraska, the Silencer are cool Golgari Gorgons but they don't care about other Gorgons
Chop Down can take down creatures with a power of four or greater
A 5-mana investment gets you +2/+2, a forced discard, and wait, whats that